John nase



J. NASE.

SPRING CLASP.

(No Model.)

Patented Jan. '7, 1890.

INVENTOR. %g;/zm

I Kl %4 ATTORNEYS UNTTED STATES PATENT OFFICE.

JOIIN NASE, OF SYRACUSE, NE\V YORK, ASSIGNOR TO THE SYRACUSE SPECIALTYMANUFACTURING COMPANY, OF SAME PLACE.

SPRING-CLASP. I

SPECIFICATION forming part of Letters Patent No. 418,924, dated January'7', 1890;

Application filed August 29, 1889.

To all whom it may concern:

Be itknown that I, JOHN NASE, of Syracuse, in the county of Onondaga, inthe State of New York, have in vented new and useful Improvements inSpring-Clasps, of which the following, taken in connection with theaccompanying drawings,is a full, clear, and ex.- act description.

This invention relates to the class of springclasps which are usuallyapplied to arctic overshoes, and in which a spring-actuated tongueinterlocks with a slotted plate; and the invention consists in animproved construction and combination of the aforesaid tongue and itssupporting-frame, which latter forms a spring for actuating the tongue,and both of said members are of such forms as to allow them to be easilystamped out of.

sheet. steel and struck up into the requisite shapes, and thus cheaplyand expeditiously manufactured.

The invention is fully illustrated in the annexed drawings, in which-Figure l is a top plan view of my improved clasp, shown interlocked,with slotted plate in dotted lines. Fig. 2 is a top plan view of theclasp-frame minus the tongue. Fig. 3 is a detached top plan view of thetongue. Figs. 4 and 5 are edge views of the clasp in closed and openpositions. Figs. 6 and 7 are detached perspective views of the twoplates of which the frame is formed. Fig.8 is an edge View of thetongue. Fig. 9 is a top plan view of a modification of my improvedclasp. Fig. 10 is an edge view of the same, and Fig. 11 is an invertedplan view of said modification.

Similar letters of reference indicate corresponding parts.

25 represents the tongue, which is hinged to the supporting-frame,(hereinafter described,) and is adapted to interlock with a slottedplate P, as shown by dotted lines in Fig. 1 of the drawings. Saidsupporting-frame I form of two steel plates A and A. The plate A is ofthe form of a rear crossbar a, from the ends of which extend forward twoplain flat arms I) b. An opening in the center of the said plate extendsfrom the cross-bar A to the free ends of the aforesaid arms. The inneredges of these arms, near the free ends there- Serial No. 322,336.

(No model.)

of, are provided with notches or apertures 71 n. Inasmuch as the frontedges of the said apertures are the important feature, for the purposehereinafter explained, the rear edges of said apertures maybe removed,so as to extend the central opening of the plate to the front edges ofthe aforesaid notches or apertures, as illustrated in Fig. 11 of thedrawings. The other plate A is placed fiatwise on the plate A, and is ofthe form of a rear cross-bar a, similar to and coinciding with that ofthe plate A, and from said cross-bar extend forward two arms Z) 1),between which is a central opening extending lengthwise thereof. Thefree ends of the latter arms are formed with recesses c c in the sideadjacent to the plate A and terminate with lips 01 d, which are bentvertically from the plane of the plate and extend through the notches orapertures n n of the plate A, as shown in Figs. 4 and 10 of thedrawings, the front edges of said notches or apertures serving as shoul'ders for the supportof the lips (Z (Z.

The described plates A A are easily stamped out of sheet-steel andstruck into the requisite shapes by suitable dies, and are rigidlyunited at their rear ends, preferably by rivets e e, passing through thecross-bars a a. The strap to which the clasp is attached passes aroundthe said two cross-bars and embraces the same. The front ends of theplates are free and capableof springing apart. The ton guethas itshinged end curved under and rearward similar to that of other Clasps ofthis class and terminates with lateral fiat projections t t, which areintegral and constitute the pintle by which the tongue is hinged to thebefore-described supportingframe, said pintle being cam-shaped andinserted in the recesses c 0 immediately back of the lips (Z (Z, thedepths of said recesses being equal to the thickness of the aforesaidpintles. It will be observed that when the tongue 25 is in its closedposition the pintle t lies wit-l1 its flat sides parallel orapproximately parallel with the planes of the plates A A, the pressureof which latter upon the pintle causes the tongue to be held normally inits aforesaid position. In raising and lowering the free end of thetongue from its supporting frame or opening and closing the clasp therecesses c .c and lips 01 d serve to prevent the pintle from slippingback and forth on the frame.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, isv 1. In a clasp, the tongue-supporting framecomposed of two plates of sheet metal lying one upon the other andrigidly united at their rear ends, one of said plates being formed withforwaidly-extending arms and with an opening between said arms andextending to the free ends thereof and having apertures verticallythrough said arms, and the other plate formed with a similar centralopening and forwardly-extending arms, terminating withvertically-projecting lips passing through the apertures in the arms ofthe first plate, in combination with the tongue having on its side edgesflat lateral projections, extending between the arms ot the two platesimmediately back of the aforesaid lips, substantially as described andshown.

2. The combination of the plate A, formed of the rear crosssba r a, andforwardly-extending plain flat arms cl (1, with a central openingbetween said arms and extending lengthwise thereof, and with notches n nin the inner edges of said arms, the plate A, lying upon the plate A andformed of the rear crossbar a, the forwardly-extending arms (1 d, withan opening between said arms lengthwise thereof, and with recesses c cand transversely-disposed vertical lips d (1, extending through theaforesaid notches, rivets uniting said plates at the rear cross-bars,and the tongue 2, formed with lateral flat projections t t,inserted intothe aforesaid recesses, substantially as described and shown.

In testimony whereof I have hereunto signed my name this 2d day ofAugust, 1889.

JOHN nAsn. 1,. s]

Wi tn csses:

MARK W. DEWEY, H. M. SEAMANS.

